Autolizer Sleeve Bearing 120mm RGB Multi-Color LEDs Silent Cooling Fan for Computer PC Cases, CPU Coolers and Radiators, High Airflow, Quiet and Transparent - 2 Years Warranty 120MM x 120MM x 25MM, speed up to 1500 RPM (maximum RPM) Seven fan blades and a sleeved bearing system for less vibration, noise and turbulence High static pressure for efficient radiator or heatsink cooling ROHS compliance for protecting the environment Tuned for high-airflow, large volume cooling, up to 50, 000 hour life span, 4 piece mounting screws included